Auxiliary precombustion chamber and combustion distributor for an internal combustion engine

Abstract

A detachable auxiliary precombustion chamber for an internal combustion engine is adapted to fit into the spark plug bore of the cylinder head and to receive a spark plug in an open bore thereof, and includes flame distributing means projecting into the combustion chamber of the engine and including a distributing cap adapted to distribute and direct flame from the precombustion chamber across the axis of the cylinder throughout the engine combustion chamber.

Having described our invention, we now claim: 
     
       1. An auxiliary combustion chamber for detachable mounting on a spark ignition internal combustion engine, said chamber comprising: a generally cylindrical housing having a chamber therein defined by a generally cylindrical through bore, one open end of said bore communicating with said chamber and including internal threads adapted to receive a spark plug,   a generally cylindrical projection extending from said housing and having external threads for threadably engaging the spark plug bore in the head of an engine and including a generally cylindrical central core member mounted in said bore and including a flared cap having a rim defining a flame distributor for extending beyond the bore into the combustion chamber of an engine, and   a plurality of flame distribution ports defined by grooves in said core member and said cap and oriented for directing flame exclusively across the combustion chamber transverse to the cylinder axis.   
     
     
       2. The auxiliary combustion chamber of claim 1 wherein said distributor includes three ports at equal angles about the axis of said bore for mounting in a central port in a hemispherical head engine thereby directing flame from the parts throughout the combustion chamber of the engine. 
     
     
       3. The auxiliary combustion chamber of claim 1 wherein said distribution ports are to one side of the axis of the bore for mounting in a cylinder head having an offset plug and are thereby directed toward the main portion of the main combustion chamber of the engine. 
     
     
       4. The auxiliary combustion chamber of claim 1 including a fuel vapor injection port communicating with said bore adjacent the one open end thereof for communicating fuel vapor to the vicinity of the spark plug. 
     
     
       5. The auxiliary combustion chamber of claim 4 including a floating ball check valve in the vapor supply line for allowing vapor flow to said bore and check flow therefrom. 
     
     
       6. The auxiliary combustion chamber of claim 1 wherein said housing includes fins defining an air-cooled body. 
     
     
       7. The auxiliary combustion chamber of claim 1 wherein said housing includes a water jacket surrounding the chamber for defining a cooled body. 
     
     
       8. The auxiliary combustion chamber of claim 4 including a water injection port communicating with said chamber at the flame distributor end thereof. 
     
     
       9. The auxiliary combustion chamber of claim 4 wherein the fuel injection is directly to the end of the spark plug. 
     
     
       10. The auxiliary combustion chamber of claim 1 including a water vapor injection port flame distributor at the end of the combustion chamber.